<!DOCTYPE html>
<html>
<!--
Copyright 2008 The Closure Library Authors. All Rights Reserved.

Use of this source code is governed by an Apache 2.0 License.
See the COPYING file for details.
-->
<!--
  Author: arv@google.com (Erik Arvidsson)
-->
<head>
<title>Closure Unit Tests - goog.fx</title>
<script src="../base.js"></script>
<script>
  goog.require('goog.Timer');
  goog.require('goog.fx');
  goog.require('goog.fx.Animation');
  goog.require('goog.object');
  goog.require('goog.testing.MockClock');
  goog.require('goog.testing.PropertyReplacer');
  goog.require('goog.testing.jsunit');
</script>
<style>

</style>
</head>
<body>
<script>

// TODO(user): Add tests for the event dispatches.
// TODO(user): Add tests for the calculation of the coordinates.

var clock, replacer, anim, anim2;
var Animation = goog.fx.Animation;

function setUpPage() {
  clock = new goog.testing.MockClock(true);
}

function tearDownPage() {
  clock.dispose();
}

function setUp() {
  replacer = new goog.testing.PropertyReplacer();
}

function tearDown() {
  replacer.reset();

  if (anim && anim.dispose) {
    anim.dispose();
  }

  if (anim2 && anim2.dispose) {
    anim2.dispose();
  }
}

function testAnimationConstructor() {
  assertThrows('Should throw since first arg is not an array', function() {
    new Animation(1, [2], 3);
  });
  assertThrows('Should throw since second arg is not an array', function() {
    new Animation([1], 2, 3);
  });
  assertThrows('Should throw since the length are different', function() {
    new Animation([0, 1], [2], 3);
  });
}

function testRegisterAndUnregisterAnimation() {
  var setTimoutCount = 0;
  var setIntervalCount = 0;
  var timerIdCounter = 1;

  replacer.set(goog.Timer.defaultTimerObject, 'setTimeout', function() {
    setTimoutCount++;
    return timerIdCounter++;
  });
  replacer.set(goog.Timer.defaultTimerObject, 'setInterval', function() {
    setIntervalCount++;
    return timerIdCounter++;
  });
  replacer.set(goog.Timer.defaultTimerObject, 'clearTimeout', function() {
    setTimoutCount--;
  });
  replacer.set(Animation, 'globalTimer_', null);


  anim = new Animation([0], [1], 1000);
  anim2 = new Animation([0], [1], 1000);

  Animation.registerAnimation(anim);

  assertTrue('Should contain the animation',
             goog.object.containsValue(Animation.activeAnimations_,
                                       anim));
  assertEquals('Should have called setTimout once', 1, setTimoutCount);
  assertEquals('setInterval should not be called', 0, setIntervalCount);
  Animation.registerAnimation(anim2);
  assertEquals('Should not have called setTimout again', 1, setTimoutCount);
  assertEquals('setInterval should not be called', 0, setIntervalCount);

  // Add anim again.
  Animation.registerAnimation(anim);
  assertTrue('Should contain the animation',
             goog.object.containsValue(Animation.activeAnimations_,
                                       anim));
  assertEquals('Should not have called setTimout again', 1, setTimoutCount);
  assertEquals('setInterval should not be called', 0, setIntervalCount);

  Animation.unregisterAnimation(anim);
  assertFalse('Should not contain the animation',
              goog.object.containsValue(Animation.activeAnimations_,
                                        anim));
  assertEquals('clearTimeout should not have been called', 1, setTimoutCount);
  assertEquals('setInterval should not be called', 0, setIntervalCount);

  Animation.unregisterAnimation(anim2);
  assertEquals('There should be no remaining timers', 0, setTimoutCount);
  assertEquals('setInterval should not be called', 0, setIntervalCount);

  // Make sure we don't trigger setTimeout or setInterval.
  clock.tick(1000);
  assertEquals('There should be no remaining timers', 0, setTimoutCount);
  assertEquals('setInterval should not be called', 0, setIntervalCount);
}

function testPlayAndStopDoesNotLeaveAnyActiveAnimations() {
  anim = new Animation([0], [1], 1000);

  assertTrue('There should be no active animations',
             goog.object.isEmpty(Animation.activeAnimations_));

  anim.play();
  assertEquals('There should be one active animations',
               1, goog.object.getCount(Animation.activeAnimations_));

  anim.stop();
  assertTrue('There should be no active animations',
             goog.object.isEmpty(Animation.activeAnimations_));

  anim.play();
  assertEquals('There should be one active animations',
               1, goog.object.getCount(Animation.activeAnimations_));

  anim.pause();
  assertTrue('There should be no active animations',
             goog.object.isEmpty(Animation.activeAnimations_));
}


</script>
</body>
</html>
